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While Drilling Umbrella Seal, Downhole BOP

Publishing Venue

The IP.com Prior Art Database

Abstract

Currently the only device in a well capable of sealing off the open hole from the
surface is the BOP. This idea would introduce an “in well” temporary sealing
device that could be deployed from the BHA.

Country

United States

Language

English (United States)

This text was extracted from a PDF file.

This is the abbreviated version, containing approximately
94% of the total text.

Page 01 of 2

Title:

While Drilling Umbrella Seal, Downhole BOP

Abstract:

Currently the only device in a well capable of sealing off the open hole from the surface is the BOP. This idea would introduce an "in well" temporary sealing device that could be deployed from the BHA.

Description:

Currently the only device in a well capable of sealing off the open hole from the surface is the BOP. This idea would introduce an "in well" temporary sealing device that could be deployed from the BHA. The device would be part of the BHA or drill string and would require activation (actions) from the surface to deploy. The device would allow for a temporary seal greater than the hydrostatic fluid column or restriction in flow. This seal or restriction will allow the rig crew to pump heavy mud to stop or reduce the fluid or gas influx. The device would be a sleeve that would when activated by mechanical means slide up (A) and open a borehole sealing material similar to a Swab Cub (B). This "umbrella seal" would be attached at up-hole und of the device and would open up like an umbrella. The lower edge of the umbrella seal will come in contact with the borehole wall (C) to create the seal/restriction. The term seal/restriction is used to acknowledge that the borehole (C) may not be concentric or the device might be activated in an enlarged section or the borehole. The umbrella when opened will temporarily stop or restrict fluid flow. The strength of the material when combined with hydrostatic...